Valve cap for a fuel cell



FIG. 1 is a top perspective view of the present valve cap design;

FIG. 2 is a front view of same, the rear view being identical;

FIG. 3 is a side view of same, both sides being identical; and,

FIG. 4 is a top view of same.

The broken line showing of a portion of a valve cap for a fuel cell is included for the purpose of illustrating environmental structure and forms no part of the claimed design. 

The ornamental design for a valve cap for a fuel cell, as shown and described. 